Mechanically-cast type bar and means for producing same



March 19, 1929. J. a. HOLBVOURNS ET'AL 1,705,567

M'EcHANIcALLYTcAsT TYPE BAR AND msms rox faobucms SAME Filed Sept. 1, 192' gaging surfaces which maintain alignment of the slugs.

a rib 8 for forming the grooves 1 and the latter with a groove 9 for forming the tongues 2. Slugs cast in a mould such as'represented,

eachpresent a groove 1 and a tongue 2 at rev spectively opposite ends, but such grooves and tongues do not disadvantageouslypat fect the locking up in the tormoi a series of' I I I I I l ll lines ol: such slugs. It desired,however, I01

the production of lines each comprising only two aligned slugs, two moulds may be employed in alternation, one mould with an end liner 6 havinga rib 8 for forming the grooves '1 and its second end liner of ordinary ungrooved construction, and the other mould i with an end liner as 7 having a groove 9 for forming the tongues 2 and its second end liner "of ordinary 'unribbed or plane formation;

with such an arrangen'mnt complementary slugs will be produced with tongues and grooves provided at only their meeting ends.

Having described our invention, We declare that what we cla m and desire to secure by Letters "Patent is 1. In or for a printing form, two complementary typebars or slugs arranged end to end in abutting relation, said slugs at their abutting ends being formed with mutually enthe lateral 2. In or for a printing form, two complementary type-bars or slugs arranged end to end in abutting relation, said slugs at their abutting ends being formed one wit-h a groove and the other with a tongue fitted theremto,

said tona'ue and roove extendin in the direction or height-to paper and actingto maintain the lateral alignment oi"- the slugs.

, 3. A type-bar or slug having a printing Ltace and formed at one end wlth ln the eftective length of its printing face with a groove extending in the direction ofheight.

to paper. a

4. A type-bar or slug having'a printingface and formed at one end Within the effective length of its printing .jface with a tongue'entending in the direction of height to paper.

5. A type-bar or slug formed at one end with a. tongue extending; inthe direction of height to paper and at its opposite end with a similarly extending groove of the same cross sectional contour as that of said tongue. v

6. The method 0t preparing a printing iorm composed of'complementary type-bars height to paper and the other wit-h a similarly extending tongue to fit said groove whereby to loclr said slugs agalnst relative lateral displacement. 1

8. A method as in claim 6, characterized'by the fact that the complementaryslugs.are cast in molds having their end walls fashioned to produce the mutually engaging surfaces.

in testimony whereof we have aiiixed our signatures hereto.

JOHN ennivmr. HOLBOURNS. WILLIAM MORRIS BOWER. 

